internal Info(uint index)
{
Win32Midi.MIDIINCAPS caps;
Win32Midi.midiInGetDevCaps(new UIntPtr(index), out caps);
Index = index;
Name = caps.szPname;
}
public void WriteShort(MidiStatusByte status, byte data1, byte data2)
{
Win32Midi.MMRESULT result;
uint dwMsg = (uint)((byte)status | (data1 << 8) | (data2 << 16));
Console.WriteLine("Write {0} {1:X2} {2:X2}", status, data1, data2);
CheckResult(Win32Midi.midiOutShortMsg(Handle, dwMsg));
}
public MidiOutputDevice(uint deviceIndex)
{
var info = new Info(deviceIndex);
Name = info.Name;
var openResult = Win32Midi.midiOutOpen(out Handle, new UIntPtr(deviceIndex), null, UIntPtr.Zero, Win32Midi.MidiOpenFlags.CALLBACK_NULL);
CheckResult(openResult);
}
public void Dispose()
{
lock (this) {
if (IsDisposed)
{
return;
}
IsDisposed = true;
Win32Midi.midiOutClose(Handle);
}
}
public unsafe void WriteSysex(byte[] buffer, int?count = null)
{
var _count = count.GetValueOrDefault(buffer.Length);
if (_count > buffer.Length)
throw new ArgumentException("count");
fixed(byte *pBuffer = buffer)
{
Win32Midi.MIDIHDR header = new Win32Midi.MIDIHDR {
lpData = pBuffer,
dwBufferLength = (uint)buffer.Length,
dwBytesRecorded = (uint)_count
};
var sizeOfHeader = (uint)Marshal.SizeOf(header);
CheckResult(Win32Midi.midiOutPrepareHeader(Handle, ref header, sizeOfHeader));
CheckResult(Win32Midi.midiOutLongMsg(Handle, ref header, sizeOfHeader));
}
}
public MidiInputDevice(uint deviceIndex)
{
var info = new Info(deviceIndex);
Name = info.Name;
SynchronizationContext = SynchronizationContext.Current;
if (SynchronizationContext == null)
{
throw new InvalidOperationException("No synchronization context");
}
Callback = _MidiCallback;
var openResult = Win32Midi.midiInOpen(out Handle, new UIntPtr(deviceIndex), Callback, UIntPtr.Zero, Win32Midi.MidiOpenFlags.CALLBACK_FUNCTION);
if (openResult != Win32Midi.MMRESULT.MMSYSERR_NOERROR)
{
throw new Exception("Opening midi input device failed with " + openResult.ToString());
}
Win32Midi.midiInStart(Handle);
}
